Wrote Letter L-477 of 1710-11-11 to the members of the Royal Society about what happened when he dissolved gold dust from Guinea in aqua regia

Date: 
November 11, 1710
Standard reference information
L-number: 
L-477
Collected Letters number: 
285
Collected Letters volume: 
16

The original manuscript on eleven quarto pages, written and signed by Leeuwenhoek, is preserved in London in the British Museum's Sloane Collection (MSS 4064).

It was never published.